it was put up on the website of cbs. it was kind of interesting. >> the fact checkers have had problems with the ads on both sides, and city have been misleading and in some cases just not true. does that disturb you? some of them are your ads. >> do you see sometimes us going overboard in our campaign, mistakes that are made? areas where there is no doubt somebody could dispute how we are presenting things? that happens in politics. people't the american entitled to the truth? >> the truth of the matter is that most of the time we're having a vigorous debate about our visions for the country. there is a lot at stake in this election, so is it going to be sharp sometimes? absolutely. people have a good sense of where i want to take the country, where governor romney -- >> so there you have the president saying, well, do we go overboard and make mistakes, that happens. yesterday, cnn was pressing mitt romney on the welfare matter. he made the statement that, well, whenever we have made mistakes or false claims, we have co